Ability
Which modal verb do we use to express ability in the present?
can
Which modal verbs do we use to express obligation?
must, have to, need to
Which modal verb do we use to give advice?
should
Which modal verbs do we use for permission?
can, may, could
You ________ to do this exercise because it's optional
You don't have to do this exercise because it's optional.
Which modal verb do we use to express ability in the past?
could
Which modal verbs do we use to express prohibition by laws and rules?
Mustn't
Which of these is not technically correct English?
can
Clue :
You are not allowed to enter the supermarket without a shirt on.
By using Modal Auxiliary Verbs:
You ________ enter the supermarket without a shirt on.
Mustn't / Can't
Is 'should' a modal verb to express obligation?
No, it isn't
Can should be used with ¨to¨?
No.
Please _____ I use your phone?
Please may I use your phone?
Clue:
Tomorrow I have a very important exam so I am going to study a lot.
By using Modal Auxiliary Verbs:
I … study a lot because I have a very important exam tomorrow.
have to / must
have to / must
Which modal verb do we use to express ability in other tenses, (e.g. future, present perfect...)
be able to
Can must be used with ¨to¨?
No
You _________ do your homework as soon as possible
You should do your homework as soon as possible.
Replace "should" with another suitable verb:
Martin should pay more attention in class.
Martin ought to pay more attention in class
He _______ to travel abroad soon.
He will be able to travel abroad soon.
Choose the correct modal verb: You (must/should/can) obey the rules.
You must obey the rules.
Your friend is tired, give him/her some advice.
You should... (e.g. go to sleep, drink some coffee)
Clue:
I advise you not to forget modal verbs before your test tomorrow.
By using Modal Auxiliary Verbs:
You … modal verbs before your test tomorrow.
ought not to forget